D1 Mini - Arduino

Pin Def's

#define D0 16
#define D1 5
#define D2 4
#define D3 0
#define D4 2
#define D5 14
#define D6 12
#define D7 13
#define D8 15
#define A0 A0
#define RX 3
#define TX 1
        

Pin Mapping To ESP8266 Pin Numbers

Wemos D1	ESP8266 Pin	Functions
D0	16	GPIO
D1	5	GPIO, I2C SCL
D2	4	GPIO, I2C SDA
D3	0	GPIO
D4	2	GPIO
D5	14	GPIO, SPI SCK (Serial Clock)
D6	12	GPIO, SPI MISO (Master in, Slave out)
D7	13	GPIO, SPI MOSI (Master out, Slave in)
D8	15	GPIO, SPI SS (Slave select)
A0	A0	Analog in, via ADC
RX	3	Receive
TX	1	Transmit

PWM Notes

ESP8266 allows software PWM in all I/O pins: GPIO0 to GPIO15. PWM signals on ESP8266 have 10-bit resolution


Min PWM value for motor that causes motor to stop running:
    Around 65

        

Deep Sleep

# this sleeps for 5 seconds
ESP.deepSleep(5e6);

You have to connect pin D0 to RST, AFTER the code has been uploaded.

If they are connected while you upload code, it will be unsuccessful
        

LED_BUILTIN pin

D4 inverted